Zang Bao, Liu Xianya, Gu Chen, Chen Jianmei, Wang Longlu, Zheng Weihao
College of Electronic and Optical Engineering & College of Flexible Electronics (Future Technology), Nanjing University of Posts and Telecommunications, Nanjing 210023, China.
College of Advanced Interdisciplinary Studies & Hunan Provincial Key Laboratory of Novel Nano Optoelectronic Information Materials and Devices, National University of Defense Technology, Changsha 410073, China.
Nanomaterials (Basel). 2024 Jul 9;14(14):1172. doi: 10.3390/nano14141172.
Hydrogen is now recognized as the primary alternative to fossil fuels due to its renewable, safe, high-energy density and environmentally friendly properties. Efficient hydrogen production through water splitting has laid the foundation for sustainable energy technologies. However, when hydrogen production is scaled up to industrial levels, operating at high current densities introduces unique challenges. It is necessary to design advanced electrocatalysts for hydrogen evolution reactions (HERs) under high current densities. This review will briefly introduce the challenges posed by high current densities on electrocatalysts, including catalytic activity, mass diffusion, and catalyst stability. In an attempt to address these issues, various electrocatalyst design strategies are summarized in detail. In the end, our insights into future challenges for efficient large-scale industrial hydrogen production from water splitting are presented. This review is expected to guide the rational design of efficient high-current density water electrolysis electrocatalysts and promote the research progress of sustainable energy.
由于氢气具有可再生、安全、高能量密度和环境友好等特性，它现在被公认为是化石燃料的主要替代品。通过水分解高效制氢为可持续能源技术奠定了基础。然而，当制氢规模扩大到工业水平时，在高电流密度下运行会带来独特的挑战。有必要设计先进的电催化剂用于在高电流密度下的析氢反应（HERs）。本综述将简要介绍高电流密度对电催化剂带来的挑战，包括催化活性、质量扩散和催化剂稳定性。为了解决这些问题，详细总结了各种电催化剂设计策略。最后，我们阐述了对未来通过水分解进行高效大规模工业制氢面临的挑战的见解。本综述有望指导高效高电流密度水电解电催化剂的合理设计，并推动可持续能源的研究进展。
